Answer
$\log(\frac{x^{2}y}{z})$
Work Step by Step
We can combine $2 \log x+\log y-\log z$ to get:
$2 \log x+\log y-\log z=\log x^{2}+\log y-\log z=\log(x^{2}y)-\log z=\log(\frac{x^{2}y}{z})$
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